a drainage kit

Abstract

The invention relates to a drainage set, which comprises a drainage main pipe and a puncture component; drainage holes penetrating the wall of the drainage main pipe are formed in the front end of the drainage main pipe; the rear end of the drainage main pipe is provided with a drainage joint; the drainage main pipe comprises an outer pipe and an inner pipe, wherein the outer pipe has biocompatibility and relative flexibility; the inner pipe is contained in the outer pipe; the hardness of the inner pipe is higher than that of the outer pipe, and the support force of the inner pipe is stronger than that of the outer pipe; the inner pipe is provided with a blockage discharge structure. According to the drainage set, not only can the drainage main pipe be safely and softly fitted with human tissue but also the maximum drainage volume and the good support force under limited pipe diameter under the action of pressure are ensured; a higher drainage volume is reached by a smaller wound; blockage can be effectively discharged by the internal blockage discharge structure; meanwhile, through a spring structure at a head part, operating personnel can be prevented from being damaged, and the inner cavity of the tissue is protected from damage of excessive puncture; moreover, the spring has a good support force, so that the drainage set has a deflation prevention function and a blockage prevention function.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a drainage set. Background technique [0002] In clinical medicine, it is a kind of operation to use puncture instruments and drainage tubes to drain and flush pathological gas accumulation, effusion, pus and blood, body fluids, etc. in human pipelines, body cavities, tissues and organs to achieve the purpose of diagnosis and treatment A common and widely used medical method. Existing puncture methods generally rely on the doctor's operating feel and experience, the frustration feeling when the puncture needle penetrates the tissue, and the observation of fluid return and blood return. And repeated operations, puncture failures and other situations occurred, causing great harm to the patient. [0003] Therefore technicians have improved the structure of the puncture needle, as the authorized announcement number is: the Chinese utility model patent "Puncture Needle" of CN25713...

AI Technical Summary

Problems solved by technology

Materials such as silicone with high biocompatibility and flexibility are generally used in the selection of drainage tube materials, but this material has poor hardness, difficult molding, low support force and high cost, and it is easy to collapse under high negative pressure. Blockage will affect the drainage effect. For this reason, methods such as thickening the tube wall and making anti-pressure ridges in the tube are generally used to solve the problem, but this will also affect the effective inner diameter of the drainage tube, resulting in a dilemma of high diameter and low flow rate. Tubes are often clogged during use, so technicians have made various improvements to the structure of the drainage tube, such as: setting special pipelines for flushing and drug delivery on the drainage tube, so that by injecting physiological saline and other infiltration, irrigation Wash the drainage site to achieve the purpose of blockage removal, but this method is only suitable for mild effusion blockage, and it is still difficult to remove scabs and large solid broken bodies; a special blockage removal strip is installed in the drainage tube, through Physical thrust to unblock the drainage tube. This method has a certain effect, but at the same time, it is easy to push the silt back into the body retrogradely, and it can only push and pull the inner wall of the drainage tube longitudinally, and has no effect on the blockage attached to the drainage hole and the periphery; The tip of the drainage tube is designed to be shaped like a curled pig’s tail or to increase the aperture of the drainage hole in order to reduce, block the drained material, and increase the drainage volume. The drained substance is a solid-liquid mixture with fluidity, so this method has little effect on preventing blockage. At the same time, the larger the drainage aperture is not the better, it should be adjusted according to the different drainage purposes and different treatment stages

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